THERE'S only one explanation for what happened last Saturday in Tucson:
C-r-a-z-y.
The guy had to be nuts to open fire and shoot a congresswoman in the head and kill a 9-year-old girl.
I'm not prepared to figuratively place his semiautomatic weapon in the hands of a talk-radio host or cable TV presenter. But that doesn't mean the climate in which this occurred is irrelevant. A national conversation about the context of this crime shouldn't require a causal connection between hate speech and violent acts.
Pima County Sheriff Clarence Dupnik tried to start such a discussion when he said, "When you look at unbalanced people, how they respond to the vitriol that comes out of certain mouths about tearing down the government. The anger, the hatred, the bigotry that goes on in this country is getting to be outrageous."